package com.itheima.homework4;

import java.util.Scanner;

public class homework4 {
    /*
    键盘录入一个字符串，统计该字符串中大写字母字符，小写字母字符，数字字符出现的次数(不考虑其他字符)
     */
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入字符串:");
        String s = sc.nextLine();
        char[] crr = s.toCharArray();
        int bigCount = 0;
        int smallCount = 0;
        int numCount = 0;
        for (int i = 0; i < crr.length; i++) {
            char c = crr[i];
            if (c >= 'A' && c <= 'Z') {
                bigCount++;
            } else if (c >= 'a' && c <= 'z') {
                smallCount++;
            } else if (c >= '0' && c <= '9') {
                numCount++;
            }
        }
        System.out.println("大写字母有"+bigCount+"个");
        System.out.println("小写字母有"+smallCount+"个");
        System.out.println("数字有"+numCount+"个");
    }
}
